The DE is very hard on brass as it ejects. You also want to avoid lead bullets in the DE. I sold mine, too finicky. They really only like full power loads, probably why it doesn't like the Blaser stuff.

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"Given adequate penetration, a larger diameter bullet will have an edge in wounding effectiveness. It will damage a blood vessel the smaller projectile barely misses. The larger permanent cavity may lead to faster blood loss. Although such an edge clearly exists, its significance cannot be quantified".